Yes! I have one on-again, off-again reader who comments on the most random things that may or may not even relate to anything that happened in the chapter, let alone the most important parts. Sometimes it's funny, but it can be really frustrating when it's for a chapter I was hoping/expecting to get a big reaction on. I think the worst was for this novel I wrote a few years ago called A Heart That Isn't Mine, which reads like one of my typical medical drama/romance fics for the first half until a huge twist that turns the second half into an intense suspense/body horror. When I posted the first chapter that was intended to make readers go, "Wait, what??" and start to realize not all was as it seemed, this girl left a comment on it asking when I was going to change my site layout because I'd had the same one for a while. Literally nothing about the story or the content of that specific chapter. I'm usually happy to get any comment, but that one annoyed me! Thankfully, I had a few other regular commenters on that story who came through with the kind of reactions I was hoping for!
I'm glad you're getting comments, but sorry they aren't focused on the intense moments you expected them to. That's hard when readers seem to care more about an aspect of the story that seems less important to you. You don't want to let them down by glossing over what they see as a big moment they've been looking forward to, but at the same time, it sounds like the reveal isn't that big of a deal in terms of the overall plot. As far as rewriting goes, I guess you could reread that scene and maybe revise it to make it more dramatic, but only if you want to and feel it would fit with the rest of the chapter. You never know what little things readers are going to fixate on.
I'm with you on the romance thing. I write it, but I'm not sure I write it well. Sometimes my readers see things differently than I do when it comes to my characters and their relationships, and that's okay, but it does make me question if I'm totally off-base with how I'm writing them.